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Email: TG2010@thinkgreatelectric.com
Current Location:Home >> Product List >> FI-MDJD-02(EKL-4)
FI-MDJD-02(EKL-4)

FI Series Panel-type Short Circuit & Earth Fault Indicator can be equipped on power equipment, such as switch
cabinet within power distribution system, cable branch box, box station and overhead power line to indicate
inter-phase short circuit and single-phase earth fault within corresponding section of power network as real-time
monitoring device. If fault occurs in the power line, with the help of on-site alarm function of indicator, operating
personnel could quickly locate the fault occurred section and find out the fault point. The alarm information can
be transmitted to the associated real-time monitoring device at the same time to monitor the condition of power
line fault in real-time. After fault occurred, line inspectors could locate fault existed section and find out fault
point according to the status of indicators.

1. Short Circuit Alarm Indication: If a short circuit fault occurs in the power line and the current reaches or exceeds
the threshold of alarm current. Short-circuit sensor sends out a alarm signal which will be transmitted to a host
through optical fiber. And then the host generates a corresponding alarm indication signal after receiving this
signal.
2. Earth Fault Alarm Indication: If an earth fault occurs in the power line and current reaches or exceeds the
threshold of alarm current. An earth fault sensor sends out a alarm signal which will be transmitted to a host
through optical fiber. And then the host generates a corresponding alarm indication signal after receiving this
signal.
3. Automatic Reset: If indicator sends out a signal and there is no manual reset implemented or delay time exceeds
configured automatic reset time. Indicator will be reset automatically. The automatic reset time is 12 or 24 hours, or
other time configured
4. Manual Reset: If alarm is activated, the indicator can be reset by triggering 'Test / Reset' button on the control
panel of the indicator to stop the alarm.
5. Automation: Indicator generates a corresponding alarm indication signal which can be output to a
remote-transmission device.

1.Short Circuit Current Alarm: ≥ 150A.Variation ± 10%; Default Setting is 800A. Short Circuit Delay is 60ms
2.Earth Fault Current Alarm: 3A-200A Variation ± 10%; Default Setting is 10A. Short Circuit Delay is 40ms
3. Operating Power: ER14505 Lithium Battery 3. 6V
4. Standby Current of Unit: ≤ 5μA
5. Auto Reset Time: 12 or 24 hours, can be configured according to the requirement.
6. Indicator Protection Level: Host IP40; Sensor IP65
7. Remote-transmission Relay: 230VAC/24VDC .2 A
8. Maximum Withstand Current of Short-circuit Current Sensor: 20KA/4S
9. Ambient Temperature: -40 ℃ - +65 ℃; Relative Humidity ≤ 95%; Waterproof, Anti-acid, Anti-salt Spray.
10. Host Mounting Dimension: Host Dimension: 96mm × 49mm × 85mm; Hole Dimension: Length 91mm ×
Width 43mm.

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